<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<script src="{Acan_path_js}/jquery.js"></script>
</head>
<body>
</body>

<script>
jQuery(document).ready(function(){
var now=new Date();
var beginTime=now.getTime();
var x = "123";
var y = "dsf";
var z='';
for (var i=0; i < 10000000; i++) {
	z+=x+y;
};
var end=new Date();
var endTime=end.getTime();
alert(endTime-beginTime)
});
</script>
</html>